ibcs2_util.h revision 139799
1/*- 2 * Copyright (c) 1994 Christos Zoulas 3 * Copyright (c) 1995 Frank van der Linden 4 * Copyright (c) 1995 Scott Bartram 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 * 29 * from: svr4_util.h,v 1.5 1994/11/18 02:54:31 christos Exp 30 * from: linux_util.h,v 1.2 1995/03/05 23:23:50 fvdl Exp 31 * 32 * $FreeBSD: head/sys/i386/ibcs2/ibcs2_util.h 139799 2005-01-06 23:22:04Z imp $ 33 */ 34 35/* 36 * This file is pretty much the same as Christos' svr4_util.h 37 * (for now). 38 */ 39 40#ifndef _IBCS2_UTIL_H_ 41#define _IBCS2_UTIL_H_ 42 43/* 44 * XXX the inlines have obnoxious prerequisites, only some of which are 45 * included here. 46 */ 47#include <vm/vm.h> 48#include <vm/pmap.h> 49#include <machine/vmparam.h> 50#include <sys/exec.h> 51#include <sys/sysent.h> 52#include <sys/proc.h> 53 54static __inline caddr_t stackgap_init(void); 55static __inline void *stackgap_alloc(caddr_t *, size_t); 56 57static __inline caddr_t 58stackgap_init() 59{ 60#define szsigcode (*(curthread->td_proc->p_sysent->sv_szsigcode)) 61 return (caddr_t)(PS_STRINGS - szsigcode - SPARE_USRSPACE); 62} 63 64static __inline void * 65stackgap_alloc(sgp, sz) 66 caddr_t *sgp; 67 size_t sz; 68{ 69 void *p = (void *) *sgp; 70 sz = ALIGN(sz); 71 if (*sgp + sz > (caddr_t)(PS_STRINGS - szsigcode)) 72 return NULL; 73 *sgp += sz; 74 return p; 75} 76 77#ifdef DEBUG_IBCS2 78#define DPRINTF(a) printf a; 79#else 80#define DPRINTF(a) 81#endif 82 83extern const char ibcs2_emul_path[]; 84 85int ibcs2_emul_find(struct thread *, caddr_t *, const char *, char *, 86 char **, int); 87 88#define CHECKALTEXIST(p, sgp, path) \ 89 ibcs2_emul_find(td, sgp, ibcs2_emul_path, path, &(path), 0) 90 91#define CHECKALTCREAT(p, sgp, path) \ 92 ibcs2_emul_find(td, sgp, ibcs2_emul_path, path, &(path), 1) 93 94#ifdef SPX_HACK 95int spx_open(struct thread *td, void *uap); 96#endif 97 98#endif /* !_IBCS2_UTIL_H_ */ 99